Designing complex objects from scratch requires a certain amount of skill and training.

从头设计复杂的对象，需要一定的技巧和培训。

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Although a certain amount of knowledge and training seems necessary, the role of acquired skill for the highest levels of achievement has traditionally been minimized.

尽管一定量的知识和训练看似必要，为臻于至善而需要掌握的技巧的作用却被小视。

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But these are big issues and it requires a certain amount of persuasion and skill and negotiating to get it done.

WHITEHOUSE: Press Briefing

"There is a certain amount of luck involved, as well as the skill of the crew and the preparation of the boat, " explained Jarvis, in an interview before he left for the Antarctic.

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